package com.itheima.day19.lg4j;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/*jar包,配置文件,日志对象,修改日志等级*/
public class Demo1 {
    private static final Logger LOGGER = LoggerFactory.getLogger(Demo1.class);

    public static void main(String[] args) {
        LOGGER.info("系统启动了...");
        LOGGER.error("error");
        LOGGER.debug("debug");
    }
}
